Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
12/07/2026, 20:32
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe
- Size 45KB
- Sample260712-za94caav8y
- SHA256 e08d2cb4f9e6fb38dc5257f215c2d1dac7800396b18e874e6715b1c37d0e490f
- MD5 bb1f4d15d2effcaa649240c48566f1d4
- SHA1 b9e70ad568ff6957ed15b36bd1f42e9bdb1118a6
- SHA512 5930229711a06e70dea47226556214273e50ee3a51a1b07835fca8c2d4699a9726b6e0b231815475d6aad5e5cefe9846a6d3a904bd163d00142d89fc3dab8294
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTy:bgGYcA/53GAGgIvF3
- TLSH T1822345387FD62972D37BDF7586F691C6B975B8223D16980D40CA43444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1220-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001100000001b664-13.dat CryptoLocker_rule2 behavioral2/memory/4036-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4036-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4036 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1220 wrote to memory of 4036 1220 2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-12_bb1f4d15d2effcaa649240c48566f1d4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4036
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 b7599297d1b82ab7bed9965523baba456bf424ac4738bb075acb525fa2872584
- MD5 6363e143c548800d3e48c894be5d79e0
- SHA1 8efd60baf932f92a7e68a9f9910df142adf693bf
- SHA512 8656be07b6a103441b4ba1961c0db4733a2eff2523bc0ae68d703f5df0cc1fa3312bb71548eaeda2a1f5226642d83508cd605080b06b0203164739ff89d07d97
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTb:bgGYcA/53GAGgIvFe
- TLSH T1E92344387FE62972D37BDF7586F691C6B975B8223D16980D40CA43444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH